Water heater for gas stoves



C. E. COLE.

WATER HEATER FOR GAS STOVES. APPLICATION men ocr. 20, 1919.- RENEWED OCT. 13. 1-921.

1,415,527. I w Patented May 9,1922.

d L d f VENTOR 1 l (75621.5

cmrronn E.-'-CQLE, or IRMINGHAM, ALABAMA, ssIeNon To LIN-EA L COLE,

BIRMINGHA ALABAMA.

WATER HEATER ron. GAs srovns.

Application fil ed October. 20, 1919, Serial No. 332,043. Renewed Octob To all whom, it may concern: it I l e Be it known that I, Cnmrono E1 (low, a a citizen of the United States of Amer1ca,jre-

siding at Birmingham,in the c'ounty of'Je-fferson and State of Alabama, haveinvented cert'ain new and useful Improvements in Water Heat rs for Gas Stoves, of which the following is a specification.- l

My invention relates to a novel waterhe'at'er attachment for gas burning. stoves.

I have sought by my present invention to design a simple and inexpensive attachment which can be mountedon the top' offl -ny therein and. provided with holes of theordinary sizeabove the burners-1 The coils are arranged to pass back and, forthacross-the stove holes in the framev with sufficient space between the coilsfor the practically unobstructed upflow of the flame 'therethrough from the burners. I

One distinctive feature of my invention is the arrangement and manner of attachment of the coils to the frame so that'they wil'l'fserveas a support for cooking vessels smaller in diameterthan the holes in the casting. v v

A further distinctive feature of my 1nvention is the provisionot means to regulate the outflow of heat through the holes in the frame to therebyl'argely confine the flame under the frame and; intensify, if desired, its heating effecto'n the hot water coils,'andto this end I provide a novel arrangement of shoulders surrounding, the holes and the lid closures therefore which; according to their relative-adjustment Will control 'the escape ofheat from the framebut which. are preferably so designed as not to smother the burner in any relative position,

My inyentionalso comprises the novel detailsof' construction and arrangements of parts, which injt'heir preferred embodiment only are illustrated in "the accompanyingdrawingain whigzh'z- I Fig. 1. is aplan view of myattachment.

Specification of LettersPatent.

mounted on s with a typicalwe wardly er 13, 1921. serial No. 507, 1430,-

part of a gas burning partly broken away;

7 stovetop andshowing one-11d, removed and the other Patented May 9, 1922.

Fig. 2 is a partial section and partial side:

elevation of Fig. 1. Y I Fig. 3 is an enlarged, crossj sectionalfview ofcover showing the A section in Fig. l.

Fig. 45 is a partial sectional I view talien on; o5

of Fig.3; l a t F 1g. 51s a, bottom plan viewrof-the stove the line 44 la'r parts throughout the drawings.

I have shown, my inventionin connection above, gas burners 4:. .The parts thus far descr bed. are typical of any gaseous fuel burningstove and may be widely varied as apart or the stove top andadjustable: I parts ln a' different positl on from that shown in the v1Eragmen'tal; cross:

Similar reference numerals refer to. simi-.

ga's'jstove 1 hayingia top 2 provided with ajplurality of holes 3 disposed my invention, is adapted to be combinedwith any type of gas burning stove. l i l y inventlonproper comprises a metallic cast" frame. comprising a .top'5 surrounded by a marginal flange 6. which and at itsbase is adapted to rest on the top 2 of the casting is. prefierably'adapted to cover two burners whetherdisposed lengthwise or.

crosswise of the st ove.

concentric, with the holes 3 and burners l of the stove. A water coil lSIHOIlIlliBCl in. the cast frame I an outlet, 1' g- 9; which are-passed through apertures 1n the flange 6 of the casting ad-I 1acent to a hot water tanknlO' to whichtheinlet leg 81 is coupled by a-pi pe 11 and the'- outlet leg9f is coupled byap-ipe 12. The'two legs 8 and 9 ofthe coil} are parallel and extend lengthwise of the casting, and

able arrangement of the coils may be'suhgl slopes outthe stove. Inlength and width? Asillustrated, the top 5 1s provided withvtwo holes/Z disposed;

and comprises an inlet leer 8 and are I spaced, co n-distantly from the hole centers, the leg Sbeing coiled back and-forth on. the adjacent side of the castinb' and; then con-v nected by a cross" leg- 13 with, similar coilsf Cir stituted, but that shown is preferred as interfering least with any other parts of attachments for the gas stove proper.

The coils at each end are rigidly clamped against the top 5 of the casting by clips 14 which underlie the several parts of the coil at their respective ends of the casting and are connected to the top of the latter by countersunk bolts 15 which receive nuts that act to bow the clips between adjacent legs of the coil and thereby hold the latter in relative position as well as to rigidly support them. The coils of the pipe are disposed so as to engage the underface of the top 5 and they are very strongly and rigldly clamped thereto by the clips 14:. As will be seen in Fig. 1, at least four legs of the pipe coils are exposed under each hole 7 and the1r spacing is such as not to materially 1nterfere with the upflow of heat from the burners while furnishing a suitable support for cooking vessels smaller in diameter than the holes 7 I provide the top 5 with a series of equldistantly spaced lugs or shoulders 16 which surround each hole 7 and have their inner vertical edges flush with the curved like edge of the hole 7. These lugs are raised about one-half an inch above the level of the casting top 5 and have flat tops on whiclra marginal rim 17 surrounding the stove lid 18 is adapted to rest. This lid is provided with an annular flange 19 which depends substantially to the level of the casting top 5 and in its outer peripheral face I cast a series of equi-distant, open bottom notches 20 which are separated by spacer webs slightly narrower circumferentially than the shoulders 16. Also the outside diameter of the flange 19 is slightly less than the diameter of the hole 7 As a result of this arrangement when the notches 20 are shifted to position directly opposite the shoulders 16, the latter substantially block the outflow of the. products of combustion through the notches, permitting just enough to pass to maintain combustion at the burners 4:, and under such conditions there is but slight escape of heat from the cast frame which, being closed underneath by the stove top, will. effectually hold the heat on all the coils and the efliciency of the heater is at a maximum. As the top is shifted to bring the notches more and more out of register with the shoulders 16, the area of the escape orifices increases until, as shown in Fig. l at the right, the notches 20 are practically unobstructed and there is a full and free outflow of the flame around the lid. By this arrangement cooking can be carried on in vessels resting on the lids with a regulated outflow of heat under the lids, or, if desired, the lid may be removed and the vessels set directly on the shoulders 16 or on the coils of the water pipe.

The use of the notched lids and their cooperation with the shoulders 16 1s such as to give me a wide range of control of the heat generated by the burners both for water heating and for cooking purposes and enables me to conduct both operations with the maximum efficiency and with the least possible waste of gas.

Having thus described my invention, what 1 claim as new and desire to secure by Letters Patent, is 1- 1. A water heating attachment for gas stoves comprising a casting having a top and marginal flanges forming an open-bottom chamber therein, a water heating coil mounted in the chamber formed under said casting,

said casting being provided with openings in its top under which portions of the coil pass, raised marginal lugs surrounding said openings, and a lid closure for said openings having a depending notched flange disposed in juxtaposition to said lugs and adaptedto co-operate therewith, as and for the pur-' poses described.

2. In a water heater for gas stoves, an attachment containing a Water coil and having holes in its top under which said coil passes, a series of equi-distantly spaced marginal shoulders surrounding said holes and having flat tops, and a lid for each hole haying a marginal rim and a depending annular flange adapted to fit a hole loosely, said flange having notches in its outer periphery spaced on the same centers as'said shoulders and slightly exceeding the latter in circumferential width. I

8. In a water heater for gas stoves, an attachment containing a water coil and having holes in its top under which said coil passes,

a series of equi-distantly spaced marginal shoulders surrounding said holes and hav-- ing flat tops, and a lid for each hole having a marginal rim adapted to set on top of said shoulders and a depending annular flange adapted to fit loosely between said shoulders, said flange having notches in its outer periphery spaced on the same centers as said shoulders and slightly exceeding the latter in circumferential width, and said notched peripheralface of said flange being slightly spaced from the inner faces of said shoul ders and corresponding substantially in height with the latter. I 4-. In a water heating attachment for gas stoves comprising a frame having a flat top with stove holes therein and a marginal down turned flange adapted to rest on the stove top, a heating coil having its inlet and outlet legs juxtaposed and entering through the side flange on each side of the center of said holes, said inlet leg being connected by a reverse bend to cross leg and said outlet leg being connected by a reverse bend to the said cross leg, all of said coil lying in the same plane juxtaposed to the flat undersurface of the frame, and a cross supporting bar at each end of the frame Which is bolted to the top and supports all legs of the coil,- substantially as described.

5. A Water heating attachment comprising an open-bottom cast frame having a fiat top With holes and a marginal flange, a Water coil disposed Within the chamber in said casting and being coiled back and forth in. 10 the same plane, the coil being closely surrounded marginally by said flange and being common cross support at eachend of the frame for the several legs of'the coil, substantially as described.

juxtaposed to the top of the frame, and a i In testimony whereof I aflixmy signature.

CLIFFORD E. COLE.

Witness NoMm WELSH. 

